Application Engine and Run Control ID's

Many a times I have heard people new to PeopleSoft say that one cannot

Many a times I have heard people new to PeopleSoft say that one cannot run
an application engine using the same Run control ID. This is not quite
right.

The reason why an application engine often does not run with the same run
control id is that a previous instance of the same application engine might
have gone to error with the same run control id.

If at all this happens and you still want to run the application engine it
can be done through the command line if all else fails. Of course to restart an
application engine the program needs to be restartable of course.